ROOT_528-00b_version: include/RooBDecay.h Source File

00001 /*****************************************************************************
00002  * Project: RooFit                                                           *
00003  * Package: RooFitModels                                                     *
00004  *    File: $Id: RooBDecay.h,v 1.7 2007/05/11 09:13:07 verkerke Exp $
00005  * Authors:                                                                  *
00006  *   PL, Parker C Lund,   UC Irvine                                          *
00007  *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
00008  *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
00009  *                                                                           *
00010  * Copyright (c) 2000-2005, Regents of the University of California          *
00011  *                          and Stanford University. All rights reserved.    *
00012  *                                                                           *
00013  * Redistribution and use in source and binary forms,                        *
00014  * with or without modification, are permitted according to the terms        *
00015  * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
00016  *****************************************************************************/
00017 
00018 #ifndef ROO_BDECAY
00019 #define ROO_BDECAY
00020 
00021 #include "RooAbsAnaConvPdf.h"
00022 #include "RooRealProxy.h"
00023 
00024 class RooBDecay : public RooAbsAnaConvPdf
00025 {
00026 
00027 public:
00028 
00029   enum DecayType { SingleSided, DoubleSided, Flipped };
00030 
00031   //Constructors, assignment etc
00032   inline RooBDecay() { }
00033   RooBDecay(const char *name, const char *title, RooRealVar& t,
00034                         RooAbsReal& tau, RooAbsReal& dgamma,
00035                         RooAbsReal& f0,
00036                         RooAbsReal& f1, RooAbsReal& f2, 
00037                         RooAbsReal& f3, RooAbsReal& dm, 
00038                         const RooResolutionModel& model,
00039                         DecayType type);
00040   RooBDecay(const RooBDecay& other, const char* name=0);
00041   virtual TObject* clone(const char* newname) const 
00042   { 
00043     return new RooBDecay(*this,newname);
00044   }
00045   virtual ~RooBDecay();
00046 
00047   virtual Double_t coefficient(Int_t basisIndex) const;
00048   RooArgSet* coefVars(Int_t coefIdx) const ;
00049 
00050   Int_t getCoefAnalyticalIntegral(Int_t coef, RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
00051   Double_t coefAnalyticalIntegral(Int_t coef, Int_t code, const char* rangeName=0) const ;
00052 
00053   Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const;
00054   void generateEvent(Int_t code);
00055 
00056 protected:
00057 
00058   RooRealProxy _t;
00059   RooRealProxy _tau;
00060   RooRealProxy _dgamma;
00061   RooRealProxy _f0;
00062   RooRealProxy _f1;
00063   RooRealProxy _f2;
00064   RooRealProxy _f3;
00065   RooRealProxy _dm;     
00066   Int_t _basisCosh;
00067   Int_t _basisSinh;
00068   Int_t _basisCos;
00069   Int_t _basisSin;
00070   Int_t _basisB;
00071   DecayType _type;
00072 
00073   ClassDef(RooBDecay, 1) // P.d.f of general description of B decay time distribution
00074     };
00075 
00076 #endif
00077